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Table 2 English listening score with or without soundproof mattress (M) under various floor impact sound

From: The responses of subjective feeling, task performance ability, cortisol and HRV for the various types of floor impact sound: a pilot study

  B T I BT TI BI p-value*
with mattress 5.53 ± 1.46 6.00 ± 1.36 6.40 ± 1.68 5.80 ± 1.93 6.00 ± 1.56 6.33 ± 1.29 0.271
without mattress 6.73 ± 0.59 4.00 ± 2.20 6.40 ± 1.30 3.27 ± 1.67 5.20 ± 2.08 6.60 ± 0.91 <0.001
p-value 0.005 0.007 1.000 0.004 0.162 0.458  
  1. Abbreviation: B bang machine, T tapping machine, I impact ball, BT B and T, TI T and I, BI B and I
  2. Unit: mean ± standard deviation
  3. *p-value was calculated by repeated measures ANOVA
  4. p-value was calculated by Wilcoxon signed ranks test